20398400

素因数分解:

$2^6\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:113

約数の個数: 168

約数和(自身を含む): 58582560

約数和(自身を除く): 38184160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 25, 32, 38, 40, 44, 50, 55, 61, 64, 76, 80, 88, 95, 100, 110, 122, 152, 160, 176, 190, 200, 209, 220, 244, 275, 304, 305, 320, 352, 380, 400, 418, 440, 475, 488, 550, 608, 610, 671, 704, 760, 800, 836, 880, 950, 976, 1045, 1100, 1159, 1216, 1220, 1342, 1520, 1525, 1600, 1672, 1760, 1900, 1952, 2090, 2200, 2318, 2440, 2684, 3040, 3050, 3344, 3355, 3520, 3800, 3904, 4180, 4400, 4636, 4880, 5225, 5368, 5795, 6080, 6100, 6688, 6710, 7600, 8360, 8800, 9272, 9760, 10450, 10736, 11590, 12200, 12749, 13376, 13420, 15200, 16720, 16775, 17600, 18544, 19520, 20900, 21472, 23180, 24400, 25498, 26840, 28975, 30400, 33440, 33550, 37088, 41800, 42944, 46360, 48800, 50996, 53680, 57950, 63745, 66880, 67100, 74176, 83600, 92720, 97600, 101992, 107360, 115900, 127490, 134200, 167200, 185440, 203984, 214720, 231800, 254980, 268400, 318725, 334400, 370880, 407968, 463600, 509960, 536800, 637450, 815936, 927200, 1019920, 1073600, 1274900, 1854400, 2039840, 2549800, 4079680, 5099600, 10199200, 20398400]

約数ペア:

[(1, 20398400), (2, 10199200), (4, 5099600), (5, 4079680), (8, 2549800), (10, 2039840), (11, 1854400), (16, 1274900), (19, 1073600), (20, 1019920), (22, 927200), (25, 815936), (32, 637450), (38, 536800), (40, 509960), (44, 463600), (50, 407968), (55, 370880), (61, 334400), (64, 318725), (76, 268400), (80, 254980), (88, 231800), (95, 214720), (100, 203984), (110, 185440), (122, 167200), (152, 134200), (160, 127490), (176, 115900), (190, 107360), (200, 101992), (209, 97600), (220, 92720), (244, 83600), (275, 74176), (304, 67100), (305, 66880), (320, 63745), (352, 57950), (380, 53680), (400, 50996), (418, 48800), (440, 46360), (475, 42944), (488, 41800), (550, 37088), (608, 33550), (610, 33440), (671, 30400), (704, 28975), (760, 26840), (800, 25498), (836, 24400), (880, 23180), (950, 21472), (976, 20900), (1045, 19520), (1100, 18544), (1159, 17600), (1216, 16775), (1220, 16720), (1342, 15200), (1520, 13420), (1525, 13376), (1600, 12749), (1672, 12200), (1760, 11590), (1900, 10736), (1952, 10450), (2090, 9760), (2200, 9272), (2318, 8800), (2440, 8360), (2684, 7600), (3040, 6710), (3050, 6688), (3344, 6100), (3355, 6080), (3520, 5795), (3800, 5368), (3904, 5225), (4180, 4880), (4400, 4636)]